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0300-922X JCPRB4(21) 2241-2348(1976)JOURNALTHE CHEMICAL SOCIETYOF~~PERKIN TRANSACTIONS IOrganic and Bio-organic ChemistryCONTENTSBy JOSEPH I. OKOGUN . . 8241PAGEGeneration of xaiithones and benzoxanthones from o-aryloxybenzaldehydes by use of copper(r1) halidesHeterocyclic compounds. Part V.By IWAO YAMAMOTO, ,4KIO MAMBA, and HARUO GOTOH. . . 2243Synthesis of some met hoxy- and hydroxy-phenazine-1-carboxylic acidsBy PHILIP K. BROOKE, S. RICHARD CHALLAND, MICHAEL E. FLOOD, RICHARD B. HERBERT, FREDERICK G.Oxidation of some penicillins and other sulphides by use of a polymer-supported peroxy-acidA4ction of heat on 6-~-chlorophenylsulphonylainino-5-~-chlorophenylsulphony~~no-l,2,5,6-tetrahydro-4,6-but ano-4H-pyrrolo 3,2,1 -ij quinoline : crys t d structure of 7 a-~-chlorophenylsulphonylamino-4,5,7 a, 8,9,10-hexahydro-7H-pyrrolo3,2,1 -de J phenant hridineand ESTER WHITE .. 22543H-pyrrol-3-one I-oxideReactions of phenyl and benzoyl isocyanates and benzoyl isothiocyanatewith hydrazonesHOLLIMAN, and P. NICHOLAS IBBERSON . . 2248By CHARLES R. HARRISON and PHILIP HODGE . . 2252By ,4. SYDNEY BAILEY, PATRICI.4 A. BALDRY, JOSEPHINE M. PEACH, STEPHEN R. CRITCHLEY, IEITH PROUT,LV-Oxides, N-imides, and ,V-ylides of five-membered heterocycles. Part 5. Reactions of 2,4,5-triphenyl-By RICHARD A. 3'. JONES arid NIKOU SADIGHI . . 2259cine-Substitution in the thiopheii series ; the behaviour of 4-nitro-3-thienyl phenyl sulphone towards sodiumBy MARINO Novr, GIUSEPPE GUANTI, CARLO DELL'ERBA, and DOMENICO SPINELLI .. 2264The iodo-lactones derived from norborn-5-en-2-endo-yl-acetic acid and -propionic acidBy DAVID I. DAVIES and -MICHAEL D. DOWLE . . 2267Fluorinations with complex metal fluorides.By RAYMOND G. PLEVEY, ISSAM J. SALLOMI, DUDLEY F. THOMAS, and J. COLIN TATLOW .Preparation of glycerols protected at the 2-hydroxy-group and their application to the synthesis of lipidsSynthesis of 7,lO- and 7,8-dimethylbenzcacridine-4 convenient synthesis of amp;unsaturated carbosylic acids and esters.arenethiolates in methanolPart 4. An improved synthesis and the oxidation of hexadeca-fluorobicyclo4.4.0dec-l(6)-ene. 2270By GEORGE H. DODD, BERNARD T. GOLDING, and PANAYIOTIS V. IOANNOU . . 2273By CECILE PENE, J E ~ ~ - I bsol; I I A R E LKOSTE, PAUL MARKOVITS, and MICHEL HUBERT-HABART .. 2277The isomeric 5-t-butylcyclohex-2-ene-carboxylic acids..l- Bv STEPHEN G. DAVIES and GORDON H. WHITHAM . . 22/91 ,Dipolar character of six-membered aromatic rings. Part XI. 1-Oxido-3-phenylphthalaziniumBy NICHOLAS DEssnS, ,~LA?bsol;T R. IATRITZKI', and MUTHYALA RAMAIAH . . 2281ii ContentsPAGE1,3-Dipolar character of six-membered aromatic rings.By NICHOLAS DENNIS, ALAN R. KATRITZKY, and STUART K. PARTON . . 22851,3-Dipola.r character of six-membered aromatic rings. Part XVIII. Adducts from 3-oxido-1-phenyl-By NICHOLAS DENNIS, ALAN R. KATRITZKY, STUART K. PARTON, YUJIRO NOMURA, YASUSHI TAKAHASHI, and1,3-Dipolar character of six-membered aromatic rings. Part XX. Preparation and dimerisation ofBy NICHOLAS DENNIS, BADRELDIN IBRAHIM, and ALAN R.KATRITZKY . . 22961,3-Dipolar character of six-membered aromatic rings.By NICHOLAS DENNIS, BADRELDIN IBRAHIM, and ALAN R. KATRITZKY . . 23071,3-Dipolar character of six-membered aromatic rings. Part XXV. 5-Aryl-1-methyl-3-oxidopyridiniumsBy NICHOLAS DENNIS, ALAN R. KATRITZKY, and ROBERTO RITTNER . . 23291,3-Dipolar character of six-membered aromatic rings.By JULIE BANERJI, NICHOLAS DENNIS, JUDIT FRANK, ALAN R. KATRITZKY, and TAISUKE MATSUO1,S-Dipolar character of six-membered aromatic rings.By NICHOLAS DENNIS, ALAN R. KATRITZKY, and HORST WILDE . . 2338Studies on B-lactams.By AJAY K. BOSE, WILLIAM A. HOFFMANN 111, and MAGHAR S. MANHAS . . 2343Part XVI. Reactions of benzyne with 3-hydroxy-pyridine, l-methyl-3-oxidopyridinium, and related compoundspyridinium and their quaternisation and conversion into tropone derivativesYOSHITO TAKEUCHI . 22891 - (5-ni tro-2-pyridyl) - and 1- (4,6-dimethylpyrimidin-2-yl)-3-oxidopyridiniumPart XXI. Thermal cycloadditions of 1-(5-nitro-2-pyridy1)- and l-(4,6-dimethylpyrimidin-2-yl)-3-oxidopyridinium with 2, 4, and 6 x-electron componentsPart XXVI. 3-Hydroxypyridine and 1-benzyl-3-oxidop yridinium. . 2334Part XXVII. Photochemically induced valencebond tautomerism and dimerisation of 3-oxido-1-phenylpyridiniumPart 46. Synthesis of nine-membered heterocycles via p-lactam